Sektor is a member of Lin Kuei. He volunteer to be turned into a cybernetic ninja. Without his soul, he is able to evade Shao Kahn's army, and searches for the rouge ninja Subzero.
Origin: Mortal Kombat 3
Sektor saw Shao Khan's army is a threat to the Lin Kuei. He fought his way to Kahn's fortress and self-destruct himself to destroy it.